/*
 * Copyright 2006 The Apache Software Foundation Licensed under the Apache
 * License, Version 2.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law
 * or agreed to in writing, software distributed under the License is
 * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */

package org.apache.ibatis.ibator.api.dom.java;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;

import org.apache.ibatis.ibator.api.dom.OutputUtilities;

/**
 * This class encapsulates the idea of an inner enum - it has methods that make
 * it easy to generate inner enum.
 * 
 * @author Jeff Butler
 */
public class InnerEnum extends JavaElement
{

	private List<Field> fields;

	private List<InnerClass> innerClasses;

	private List<InnerEnum> innerEnums;

	private FullyQualifiedJavaType type;

	private Set<FullyQualifiedJavaType> superInterfaceTypes;

	private List<Method> methods;

	private List<String> enumConstants;

	/**
     * 
     */
	public InnerEnum(FullyQualifiedJavaType type)
	{
		super();
		this.type = type;
		fields = new ArrayList<Field>();
		innerClasses = new ArrayList<InnerClass>();
		innerEnums = new ArrayList<InnerEnum>();
		superInterfaceTypes = new HashSet<FullyQualifiedJavaType>();
		methods = new ArrayList<Method>();
		enumConstants = new ArrayList<String>();
	}

	/**
	 * @return Returns the fields.
	 */
	public List<Field> getFields()
	{
		return fields;
	}

	public void addField(Field field)
	{
		fields.add(field);
	}

	/**
	 * @return Returns the innerClasses.
	 */
	public List<InnerClass> getInnerClasses()
	{
		return innerClasses;
	}

	public void addInnerClass(InnerClass innerClass)
	{
		innerClasses.add(innerClass);
	}

	public List<InnerEnum> getInnerEnums()
	{
		return innerEnums;
	}

	public void addInnerEnum(InnerEnum innerEnum)
	{
		innerEnums.add(innerEnum);
	}

	public List<String> getEnumConstants()
	{
		return enumConstants;
	}

	public void addEnumConstant(String enumConstant)
	{
		enumConstants.add(enumConstant);
	}

	public String getFormattedContent(int indentLevel)
	{
		StringBuilder sb = new StringBuilder();

		addFormattedJavadoc(sb, indentLevel);
		addFormattedAnnotations(sb, indentLevel);

		OutputUtilities.javaIndent(sb, indentLevel);
		if (getVisibility() == JavaVisibility.PUBLIC)
		{
			sb.append(getVisibility().getValue());
		}

		sb.append("enum "); //$NON-NLS-1$
		sb.append(getType().getShortName());

		if (superInterfaceTypes.size() > 0)
		{
			sb.append(" implements "); //$NON-NLS-1$

			boolean comma = false;
			for (FullyQualifiedJavaType fqjt : superInterfaceTypes)
			{
				if (comma)
				{
					sb.append(", "); //$NON-NLS-1$
				}
				else
				{
					comma = true;
				}

				sb.append(fqjt.getShortName());
			}
		}

		sb.append(" {"); //$NON-NLS-1$
		indentLevel++;

		Iterator<String> strIter = enumConstants.iterator();
		while (strIter.hasNext())
		{
			OutputUtilities.newLine(sb);
			OutputUtilities.javaIndent(sb, indentLevel);
			String enumConstant = strIter.next();
			sb.append(enumConstant);

			if (strIter.hasNext())
			{
				sb.append(',');
			}
			else
			{
				sb.append(';');
			}
		}

		if (fields.size() > 0)
		{
			OutputUtilities.newLine(sb);
		}

		Iterator<Field> fldIter = fields.iterator();
		while (fldIter.hasNext())
		{
			OutputUtilities.newLine(sb);
			Field field = fldIter.next();
			sb.append(field.getFormattedContent(indentLevel));
			if (fldIter.hasNext())
			{
				OutputUtilities.newLine(sb);
			}
		}

		if (methods.size() > 0)
		{
			OutputUtilities.newLine(sb);
		}

		Iterator<Method> mtdIter = methods.iterator();
		while (mtdIter.hasNext())
		{
			OutputUtilities.newLine(sb);
			Method method = mtdIter.next();
			sb.append(method.getFormattedContent(indentLevel, false));
			if (mtdIter.hasNext())
			{
				OutputUtilities.newLine(sb);
			}
		}

		if (innerClasses.size() > 0)
		{
			OutputUtilities.newLine(sb);
		}

		Iterator<InnerClass> icIter = innerClasses.iterator();
		while (icIter.hasNext())
		{
			OutputUtilities.newLine(sb);
			InnerClass innerClass = icIter.next();
			sb.append(innerClass.getFormattedContent(indentLevel));
			if (icIter.hasNext())
			{
				OutputUtilities.newLine(sb);
			}
		}

		if (innerEnums.size() > 0)
		{
			OutputUtilities.newLine(sb);
		}

		Iterator<InnerEnum> ieIter = innerEnums.iterator();
		while (ieIter.hasNext())
		{
			OutputUtilities.newLine(sb);
			InnerEnum innerEnum = ieIter.next();
			sb.append(innerEnum.getFormattedContent(indentLevel));
			if (ieIter.hasNext())
			{
				OutputUtilities.newLine(sb);
			}
		}

		indentLevel--;
		OutputUtilities.newLine(sb);
		OutputUtilities.javaIndent(sb, indentLevel);
		sb.append('}');

		return sb.toString();
	}

	/**
	 * @return Returns the superInterfaces.
	 */
	public Set<FullyQualifiedJavaType> getSuperInterfaceTypes()
	{
		return superInterfaceTypes;
	}

	public void addSuperInterface(FullyQualifiedJavaType superInterface)
	{
		superInterfaceTypes.add(superInterface);
	}

	/**
	 * @return Returns the methods.
	 */
	public List<Method> getMethods()
	{
		return methods;
	}

	public void addMethod(Method method)
	{
		methods.add(method);
	}

	/**
	 * @return Returns the type.
	 */
	public FullyQualifiedJavaType getType()
	{
		return type;
	}
}
